SELF-ADJUSTING STOP BUFFER

Abstract

A self-adjusting stop buffer device (100) comprising a buffer head (60), a base (20) with a guide profile, and a central body (40) with a groove cooperating with said profile, the central body being mounted on the base by a translational movement along an X direction, the central body partially receiving the buffer head. The buffer head can move relative to the central body along a Z direction. The device further comprises a locking element (80) inserted in the central body along a Y direction, and actuable by translation to lock the buffer head in the Z direction within the central body and to lock the central body on the base in the X direction.The locking element and the buffer head each comprise, respectively, at least one thrust ramp (86) and at least one housing (66) adapted to receive said ramp, said ramp and housing being adapted, when the locking element is actuated in translation, to produce a cam effect and allow the buffer head to be raised. The locking element has an open position in the central body, in which said thrust ramp is received by said housing and the locking element can be depressed in the Y direction, and a locked position, in which the buffer head is blocked in the Z direction. The locking element and the base comprise locking means that cooperate only in the locked position to block the central body in the X direction.

Description

Domaine technique de l'invention

[0001] The present invention relates to the field of vehicle equipment, particularly closing buffers, and more specifically to a self-adjusting stop buffer designed to hold a first pivoting structure onto a second fixed structure such as a motor vehicle chassis. For example, the first pivoting structure could be a door, a tailgate or hood, or even a single / double-leaf rear door of a commercial vehicle. Technique antérieure

[0002] A tailgate stop typically comprises a stop fixed to the vehicle body and a counter-stop on the tailgate. These two elements work together to hold the tailgate against the body when closed. The tailgate can be fitted with multiple stops. To facilitate the installation of the stop, particularly the alignment of these two elements, the stop on the fixed structure is provided with an adjustable surface. This type of device is known from the prior art.

[0003] British patent GB2410990 describes a stop buffer comprising a main body, a sliding element within the main body, and a locking mechanism. For assembly, the main body and the sliding element are initially fixed to the housing. The position of the sliding element is adjusted by closing the sliding structure. The locking element is then inserted into the sliding element to secure its position within the main body after the sliding structure is reopened. The position of the sliding element can be affected by various actions, such as reopening the sliding structure or inserting the locking element. In particular, the latter is achieved using an inclined surface. Once locked, the device cannot be readjusted. Exposé de l'invention

[0004] The present invention aims to remedy these drawbacks by proposing a self-adjusting stop buffer that allows for simple assembly and quick mounting in a given structure.

[0005] To this end, the present invention relates to a buffer device, or buffer, with a self-adjusting stop, comprising a buffer head having an upper surface serving as a stop, a base having a guide profile, and comprising a central body having a groove cooperating with said profile, the central body being mounted on the base by a translational movement, along a first direction in a plane of movement, the central body partially receiving the buffer head by a face opposite to that in contact with the base, the buffer head being able to move relative to the central body along a third direction substantially perpendicular to the plane of movement, the buffer device further comprising a locking element inserted in the central body, along a second direction substantially perpendicular to the first and third directions,and actuable in translation to lock the buffer head in the central body in the third direction and to lock the central body on the base in the first direction.

[0006] According to a first aspect of the invention, the self-adjusting stop buffer has the following characteristics: The locking element and the buffer head comprise, respectively, at least one push ramp and at least one housing adapted to receive said at least one ramp, said at least one push ramp and said at least one housing being adapted to, when the locking element is actuated in translation, produce a cam effect and allow the buffer head to be raised; the locking element has an open position, in the central body, in which said at least one push ramp is received by said at least one housing and the locking element can be depressed in the second direction and a locked position, in which the buffer head is blocked in the third direction; the locking element and the base comprise locking means which cooperate only in the locked position to block the central body in the first direction.

[0007] Advantageously, the buffer helps to reduce noise, especially when closing a tailgate.

[0008] Advantageously, the stop is self-adjusting in order to adjust the buffer during mounting on a structure.

[0009] Advantageously, when locking the stop buffer after adjustment, the stop riser which holds the moving structure ensures tension with the moving structure closed.

[0010] Advantageously, the buffer allows the mobile structure to be radially closed in order to dampen noise.

[0011] Advantageously, the buffer head rises into the central body thanks to slopes located on the locking element.

[0012] Advantageously, the buffer head rests on the locking element in the locked position so as to prevent the locking element from unlocking during stresses.

[0013] The invention is advantageously implemented according to the embodiments and variants set out below, which are to be considered individually or in any technically feasible combination.

[0014] In one embodiment, the upper surface of the buffer head is inclined with respect to the plane formed by the first and second directions. In another embodiment, the central body can move in the first direction, with the locking element in the open position.

[0015] In one embodiment, the stop buffer further includes means for defining the path of the central body in the first direction.

[0016] In one embodiment, the stop buffer further includes means for positioning the central body on the base, the locking element being in the open position.

[0017] In one embodiment, means for positioning the central body on the base include a rack on the base and a belt having a bulge.

[0018] In one embodiment, said guide profile has a T-shaped section. In one embodiment, the locking means consist of at least one rack on the T-shaped guide profile and one rack of the locking element.

[0019] In one embodiment, the self-adjusting stop buffer further includes means for maintaining the position of the buffer head in the third direction in the open position; preferably, the holding means is a rod elastically connected to the locking element, so that it rests on the buffer head.

[0020] In one embodiment, the central body and the base are assembled by a snap-fit ​​assembly.

[0021] In one embodiment, the self-adjusting stop buffer further includes means for returning it to the open position.

[0022] In one embodiment, the self-adjusting stop buffer is not removable in the open position.

[0023] According to a second aspect, the present invention relates to a method for mounting a buffer device according to the invention on a first structure to separate it from a second movable structure. This method comprises the following steps: (i) fix the self-adjusting stop buffer in the open position on the first structure; (ii) rotate the second structure to adjust the central body in the first direction relative to the base; (iii) reopen the second structure; (iv) put the buffer device in the locked position by actuating the locking element.

[0024] Advantageously, the stop buffer according to the invention simplifies the process of its assembly between two structures and reduces assembly time and the number of parts. Brève description des figures

[0025] Other advantages, purposes and features of the present invention will become apparent from the following description, given for explanatory purposes and in no way as a limitation, with reference to the accompanying drawings, in which: There figure 0 represents a cross-sectional view of part of a pivoting structure and a fixed structure with a self-adjusting stop buffer according to the invention; The figure 1A represents a perspective view of a self-adjusting stop buffer according to the invention; The figure 1B represents an exploded view of a self-adjusting stop buffer according to the invention; The figure 1C represents a schematic illustration of the base of a self-adjusting stop buffer according to one embodiment; The figure 2A represents a diagram for adjusting and locking a pre-assembled, self-adjusting stop buffer in the open position; The figure 2B represents a diagram for adjusting and locking a self-adjusting stop buffer in the locked position; The figure 3A represents a perspective section of the buffer following section AA' on the figure 2A ; There figure 3B represents a cross-sectional view of the buffer along section BB' on the figure 2B ; There figure 3C represents a detailed view of the thrust ramp and its housing of the figure 3A ; There figure 3D represents a detailed view of the thrust ramp and its housing of the figure 3B ; There figure 4A represents a bottom view of the entire buffer head, the central body and the self-adjusting stop buffer locking element in the open position on the figure 2A ; There figure 4B represents a bottom view of the entire buffer head, the central body and the self-adjusting stop buffer locking element in the locked position on the figure 2B ; There figure 5 represents a cross-sectional view of the buffer along section CC' on the figure 2A ; There figure 5A represents a detailed view of part A on the figure 5A ; There figure 5B represents a detailed view of part B on the figure 5A ; There figure 6A represents a cross-sectional view of the buffer along section DD' on the figure 2B ; There figure 6B represents a view of the entire buffer head, the central body and the self-adjusting stop buffer locking element on the figure 2B ; There figure 7A represents a cross-sectional view of a self-adjusting stop buffer in its maximum deployed position according to one embodiment; The figure 7B represents a detailed view of the figure 7A ; There figure 8A represents a partial cross-sectional view of the buffer along section EE' on the figure 2A ; There figure 8B represents a partial cross-sectional view of the buffer along section FF' on the figure 2B . Description des modes de réalisation

[0026] The different figures, as well as the elements within a single figure, are not necessarily represented at the same scale. Across all figures, identical elements share the same numerical reference.

[0027] The terminology used in this description should in no way be interpreted in a limiting or restrictive manner, simply because it is used in conjunction with a detailed description of certain embodiments of the invention.

[0028] Throughout this description, the terms "up", "down", "front", "back", "upper", "lower", "vertical", "horizontal", and any terms and expressions that may be associated with or derived from them, shall be understood, unless otherwise specified or evident, as having the meaning that an operator of the device shown in the description would give them. figure 1A Given the (XYZ) axis system shown in this figure, the front and top are located respectively along increasing X and increasing Z.

[0029] There figure 0 Figure 200 illustrates a pivoting structure, here a single / double-leaf rear door of a utility vehicle, which closes a fixed structure 300 of the vehicle, in this case the fixed part of the vehicle's rear cargo area. A self-adjusting buffer 100 is mounted on the fixed part of the cargo area, while an optional counter-stop 220 is mounted on the rear door 200. The counter-stop 220 comes into contact with the buffer head of the device 100 when the rear door is closed.

[0030] There figure 1A shows a diagram of a buffer with a self-adjusting stop in the open position. On the figure 1A , the self-adjusting stop buffer 100 according to the invention comprises a base 20, a central body 40, a buffer head 60 and a locking element 80.

[0031] These four components can be made by molding known plastic material, more particularly technical plastics such as polyamides, acetal resins, thermoplastic polyesters.

[0032] Thus, such a self-adjusting stop buffer can be manufactured at low cost.

[0033] In this description, the "open position" of a stop buffer means a position in which the stop head is adjustable, with the locking element in the open position; the "locked position" of a stop buffer means a position in which the stop head is locked, with the locking element in the locked position.

[0034] The central body 40 receiving the buffer head 60 by its upper part and the locking element 80 by its left face can be assembled, by its lower part, to the base 20, by sliding mounting, for example by means of a rail.

[0035] In the implementation of the figure 1B The base 20 has two grooves 22 along the X axis with an L-shaped cross-section, the bottoms of which are respectively opposite edges 24. Thus, a central part 26 formed between the two grooves 22 constitutes an essentially T-shaped profile having a top surface 26. On the top surface 26, the base 20 further has two straight racks 30 substantially along the X axis and separated by a central band 28. A straight rack 32 extending along the X axis is located on which central band 28.

[0036] The central body 40 has means in its lower part for sliding on the base 20. In one described embodiment, the central body 40 has a predominantly T-shaped groove cooperating with the predominantly T-shaped profile of the base 20. When the central body 40 is mounted on the base 20, its lower walls 43 can be housed in the L-shaped grooves 22. Advantageously, this arrangement prevents relative displacement between the base 20 and the central body in the direction of the Z-axis. The central body 40 further has two grooves 426 for receiving the straight racks 30 of the base 20, said grooves 426 being separated by a band 48.

[0037] On the figure 1B The self-adjusting stop 100 comprises a stop head 60 having an upper surface 62 which forms the stop. In the illustrated embodiment, the stop head 60 is essentially triangular in shape, possibly raised, with its triangular cross-section lying in the XZ plane, the surface 62 being inclined from rear to front. The stop head 60 has a recess 64 with two parallel straight grooves 642 on its front and rear walls, providing an opening 65 on the right face of the stop head 60. The straight grooves 642 form rails with which the opening 65 is adapted to receive the locking element 80.

[0038] The central body 40 also has a recess with an opening 44 upwards, this recess being suitable for at least partially fitting the buffer head 60. The central body 40 has, on its right face, a lateral opening 46 suitable for receiving the locking element 80.

[0039] On its front and rear walls, the locking element has, along the Y axis, two grooves 82 delimited respectively by lower edges 83 and upper edges 84. The grooves 82 are suitable for receiving the lower edges 644 of the grooves 642 when the locking element itself is received by the buffer head.

[0040] In the implementation of the figure 1B , there is also a location 81 at the right end of the locking element 80.

[0041] On the figure 1C A base 20 and straight racks 30 and 32 are observed, essentially aligned along the X direction on the upper face of the base 20. Each groove 22 has a width L1 at its front face and a width L2 at its rear face. The edges opposite the bottoms of the grooves 22 extend along the X axis.

[0042] In one embodiment, the buffer assembly according to the invention is carried out as follows: (a) the central body 40 is first mounted on the base 20 by inserting the central body 40 onto the T-profile constituting a rail and sliding it along the X axis; (b) the buffer head 60 is then placed in the central body 40, ensuring that their lateral openings 65 and 46 are on the same side; (c) the locking element is finally inserted facewise into the lateral opening 46 and also into the opening 65.

[0043] THE figures 2A et 2B illustrate respectively a self-adjusting stop buffer according to the invention in the open position and in the locked position. The self-adjusting stop buffer according to the invention is pre-assembled with its components 20, 40, 60 and 80 as described above. The pre-assembled buffer, as illustrated in the figure 2A , is ready to be mounted on a structure such as a vehicle chassis.

[0044] THE figures 3A et 3B illustrate, respectively, a cross-sectional view of the buffer along section AA' on the figure 2A where buffer 100 is in the open position and a cross-sectional view of buffer following section BB' on the figure 2B where buffer 100 is in locked position, in the YZ plane.

[0045] The locking element 80 has at least one thrust ramp 86 on its contact face with the buffer head 60, which itself has at least one recess 66 defining a profile identical to the thrust ramp 86. The recess 66 is designed to receive the thrust ramp 86 in the open position. The recess 66 and the thrust ramp 86 are arranged so that, in the open position, when the locking element 80 is withdrawn from the central body 40, the thrust ramp 86 is blocked by the recess 66, and when the locking element 40 is pushed towards the central body 40, the thrust ramp 86 is extended from the recess 66.

[0046] In the embodiment illustrated on the figures 3A et 3B The thrust ramp 86 has, in the YZ plane, a right trapezoidal cross-section with its long base at the bottom. The thrust ramp emerges from the housing by means of an inclined surface 862 comprising the inclined side of the right trapezoid and a cooperating surface 662 of the housing 66, when the locking element is pushed towards the central body 40 by its right end. Simultaneously, the translational movement of the thrust ramp 86 relative to the buffer head 60 produces, through a cam effect with the cooperating surface 662 of the housing 66, an upward translation along the Z-axis of the buffer head within the central body 40, causing a relative raising of the buffer head 60 by a height H within the central body 40. The height H corresponds to the thickness of the thrust ramp along the Z-axis.

[0047] In one embodiment, the assembly of the locking element and the buffer head is tightened in the locked position so that the unlocking of the locking element cannot be caused by simple stresses, due for example to vibration of the chassis on which the buffer is mounted.

[0048] As illustrated on the figures 3A et 3B The locking element 80 has a bulge 89, and the central body 40 has a bulge 49. Thanks to the elasticity of the material and the slopes of these bulges 89 and 49, when the locking element 80 moves from the open to the locked position, the bulges 89 and 49 pass through each other and form a socket. Another advantage is that it indicates when the locking element is in the locked position. This arrangement prevents unlocking by simple manipulation; however, moving from the locked to the open position is possible with a specific disengagement force.

[0049] In contrast, the housing 66 has a vertical surface 664 that acts as a stop, preventing the push ramp from exiting the housing in the opposite direction. The vertical face 864 of the ramp rests against the vertical surface 664, given that the buffer head 60 itself is fitted into the central body 40. figures 3C et 3D These figures illustrate, respectively, the cooperation of the ramp 86 and the housing 66 in detail in the open and locked positions. In one variant, the YZ plane section of the thrust ramp 86 is a right triangle. In another variant, the thrust ramp has a profile that allows for several consecutive rises of the thrust head.

[0050] There figure 4A illustrates a bottom view of the entire buffer head 60, the locking element 80 and the central body 40 of the buffer in the open position on the figure 2A ; there figure 4B illustrates a bottom view of the same buffer assembly in the locked position on the figure 2B .

[0051] In the implementation of the figure 4A The belt 48 of the central body 40 includes a locking device on one lower face, for example at least one bulge 482 forming a notch that engages with the second rack 32 provided on the base 20 when the central body is mounted on the latter. Advantageously, this locking device allows the central body 40 to be positioned on the base 20 during the translational movement of the central body 40 relative to the latter, as illustrated in the figures 5 et 5A which will be detailed later. Since the central body 20 can be made of plastic, the belt 48 exhibits a certain degree of elasticity. The bulge 482 therefore does not impede this relative translational movement. This represents another advantage of the invention, which will be detailed later, particularly when mounting the buffer on a chassis.

[0052] In one embodiment, the central body 40 includes a downward projecting element 484 serving as a stop, in one end of the belt 48.

[0053] We can observe on the figure 4B that said at least one rack 88 of the locking element 20 is exposed to the grooves 426 which receive said racks 30 of the base 20. The entire central body, the base, and the locking element are arranged so that the racks 30 and 88 cooperate in the locked position, locking the central body 40 along the X-axis. More generally, said at least one rack of the locking element may be in the form of contiguous grooves or notches. The figure 5 illustrates a cross-sectional view of the buffer in the open position along section CC' on the figure 3A in the XZ plane, from which we can observe a positioning system of the central body on the base 20. The bulge is in the form of a tooth 482 engaging with the rack 30 with projections 32.

[0054] Advantageously, this positioning means 482 and 30 makes it possible to maintain the position of the central body 40 on the base 20 in the X axis without unwanted displacement; for example, the central body 40 can stably occupy an initial position after the buffer in the open position is mounted on a structure, and a second position after adjustment in which the buffer is locked by actuating the locking element 80. Advantageously, this positioning means makes it possible to avoid unwanted movements of the central body 40, for example a translation caused by the force of gravity or by vibration.

[0055] As illustrated on the figures 5 et 5B The projecting element 484, constituting a first locking mechanism, rests against the rear face of the base 20, or its central band 28, which may have a recess 282 adapted to receive the stop 484. In one embodiment, the recess 282 extends along the rack 30, forming a step. The bulge 482 therefore cannot move beyond its position on the rack 32 when the stop 484 rests against the base 20, thus defining a first end of the path of the positioning means 482.

[0056] There figure 6A illustrates a cross-sectional view of the buffer along section DD' in the XZ plane on the figure 2B . There figure 6B illustrates a view of the entire locking element, the buffer head, and the central body of the buffer with the stop in the locked position on the figure 2B The locking element 80 includes means for retaining the pad head along the Z-axis. In one embodiment, the locking element has at least one groove 82 extending along the Y-axis, and optionally, a groove 82 on each of its front and rear faces. When the locking element 80 is inserted into the central body according to the invention, the pad head receives it through its opening 65 with a vertical T-shaped cross-section, the lower edges 644 being received by at least one groove 82. Advantageously, these means limit the displacement of the pad head along the Z-axis.

[0057] On the figure 7A The stop buffer according to the invention, viewed from below, shows that the assembly of the central body 40 and the base 20 is also characterized by an elastic interlocking mechanism. figure 7B This illustrates a second locking mechanism consisting of an element 432 on a lower wall 43 of the central body and a second element 232 in a groove 22 of the base, these two elements being adapted to form a snap-fit ​​assembly. This snap-fit ​​allows a second end of the path of the positioning means 482 to be defined by its locking function. Advantageously, the first 484 and the second 232, 432 locking mechanisms delimit the path of the central body 40 on the base 20, thus making disassembly of these two components 20, 40 impossible. In combination with other different devices described above, it is impossible to disassemble the stop pad according to the invention without damaging the components. Advantageously, an operator adjusting the stop pad in the open position does not risk losing a component.

[0058] In some embodiments, the central body 40 can be introduced, during assembly, only from the face opposite to that which includes the stop 484.

[0059] With reference to the method of implementation of the figures 4B And 1C The lower wall 43 of the central body 40 and the groove 24 of the base both have a width that increases overall along the Y-axis, respectively, between D1 and D2 (D1 < D2), and between L1 and L2 (L1 < L2). These values ​​are chosen so that the central body can be mounted on the base only by the cooperation of two defined faces of the central body with another face of the base. Advantageously, this arrangement allows, for example, an operator to avoid assembly errors.

[0060] The buffer according to the invention further comprises means for maintaining the position of the buffer head in the central body 40, particularly along the Z-axis, even in the open position. This will be described in detail later with reference to the figures 8A et 8B which illustrate, respectively, a partial cross-sectional view of the buffer in the open position along section EE' on the figure 2A and a partial cross-sectional view of the buffer in the locked position along section FF' on the figure 2B in the YZ plane. The locking element 80 comprises at least one rigid element 85, for example, a rod. This retaining element 85 is connected to the lock, for example, by means of a torsion spring, so that it bears against the pad head to hold it in the Z-axis, in both the open and locked positions. Advantageously, these means make it possible to maintain the vertical position of the pad head, particularly in the open position. For example, during the routing and / or handling of the pad according to the invention, the absence of relative movement between components helps to limit their degradation.

[0061] The following describes the mounting of the pad according to the invention on a fixed structure, while the pivoting structure is optionally equipped with a stop. The pre-assembled pad with stop can be mounted on the fixed structure in the following steps: (i) The self-adjusting pad with stop 100 is first fixed to the frame in a known manner, for example, with conventional fasteners such as screws, anti-creep rings, and washers. (ii) The second structure is rotated to adjust the central body 40 in the first direction X relative to the base 20; (iii) The second structure is reopened; (iv) The pad head 60 is raised by pushing the locking element 80 into the central body 40 until it is in the locked position, as illustrated in the figures. figures 2B And 3B, location 81 being outside the central body 40. (v) The door is closed, a prestress having then been introduced by the effect of the raising of the buffer head 60.

[0062] It is possible to return the stopper to the open position by placing a tool such as a screwdriver or a dedicated tool in location 81 and pulling it outwards until the stopper returns to its open position in which the stopper is ready to be adjusted according to the steps (ii)(iii)(iv) and (v) above.

[0063] The buffer stop device according to the invention allows for simple and quick assembly, and in particular reduces the time required to adjust the buffer. LISTE DES SIGNES DE RÉFÉRENCE Références Désignations 100 tampon à butée auto-ajustable 20 embase 22 rainure 232 élément d'encliquetage 24 rainure 26 profilé de guidage 28 bande centrale 282 obviously 30 rack and pinion 32 rack and pinion 40 central body 42 obviously 426 groove 43 lower wall 432 snap-on element 44 opening 46 side opening 48 belt 49 bulge 482 bulge 484 salient element 60 buffer head 62 top surface 64 obviously 642 groove 644 bottom edge 65 side opening 66 accommodation 662 surface 664 vertical surface 80 locking element 81 location 82 groove 83 lower edge 84 upper edge 85 retaining element 86 push ramp 88 rack and pinion 89 bulge 862 inclined surface 864 vertical surface

Claims

1. Self-adjusting stop buffer device (100), comprising a buffer head (60) having an upper surface (62) serving as a stop, a base (20) having a guide profile (26), and comprising a central body (40) having a groove cooperating with said profile, the central body (40) being mounted on the base (20) by a translational movement, along a first direction (X) in a plane of movement, the central body (40) receiving at least partially the buffer head (60) by a face opposite to that in contact with the base (20), characterized in that the buffer head (60) can move relative to the central body (40) along a third direction (Z) perpendicular to the plane of movement, and in thatthe buffer device further comprising a locking element (80) inserted in the central body (40), along a second direction (Y) perpendicular to the first and third directions, and actuable in translation to block in the third direction (Z) the buffer head (60) in the central body (40) and to block in the first direction (X) the central body (40) on the base (20).

2. Self-adjusting stop buffer device (100) according to claim 1, wherein the locking element (80) and the buffer head (60) comprise, respectively, at least one push ramp (86) and at least one housing (66) suitable for receiving said at least one ramp, said at least one push ramp (86) and said at least one housing (66) being suitable for, when the locking element is actuated in translation, producing a cam effect and allowing the raising of the buffer head (60).

3. Self-adjusting stop buffer device (100) according to any one of the preceding claims, wherein the locking element has an open position in the central body (40), in which said at least one push ramp (86) is received by said at least one housing (66) and the locking element (80) can be pushed in along the second direction and a locked position, in which the buffer head is blocked in the third direction.

4. Buffer device (100) with self-adjusting stop according to any one of the preceding claims, wherein the locking element (80) and the base (20) have locking means (30, 88) which cooperate only in the locked position to block the central body (40) in the first direction.

5. Self-adjusting stop buffer device (100) according to one of the preceding claims, wherein the central body (40) can move in the first direction, the locking element being in the open position.

6. Buffer device (100) with self-adjusting stop according to any one of the preceding claims, wherein it comprises means (484) for defining the path of the central body (40) in the first direction, preferably a salient element (484) serving as a stop.

7. Self-adjusting stop buffer device (100) according to any one of the preceding claims, wherein it comprises means (32, 482) for positioning said central body (40) on said base (20), the locking element being in the open position.

8. Buffer device (100) with self-adjusting stop according to any one of the preceding claims, wherein said means for positioning said central body (40) on said base (20) comprise a rack (32) on the base (20) and a belt (48) comprising a bulge (482).

9. Buffer device (100) with self-adjusting stop according to one of the preceding claims, wherein said guide profile (26) has a T-shaped cross-section.

10. Buffer device (100) with self-adjusting stop according to any one of the preceding claims, wherein said locking means consist of at least one rack (30) on said T-guide profile and at least one rack (88) of the locking element (80).

11. Buffer device (100) with self-adjusting stop according to any one of the preceding claims, wherein it comprises retaining means (85) for holding the head of the buffer (60) in position in the third direction in the open position.

12. Self-adjusting stop buffer device (100) according to any one of the preceding claims, wherein the retaining means is a rod (85) elastically linked to the locking element and bearing on the buffer head.

13. Buffer device (100) with self-adjusting stop according to one of the preceding claims, in which the central body (40) and the base (2) are assembled by snap-fit ​​mounting.

14. Buffer device (100) with self-adjusting stop according to one of the preceding claims, wherein it comprises means (81) for returning it to the open position.

15. Buffer device (100) with self-adjusting stop according to one of the preceding claims, characterized in thatIt cannot be disassembled in the open position.

16. Method of mounting a buffer device according to any one of claims 1 to 15 on a first structure to separate it from a second pivoting structure, characterized in that It comprises the following steps: - (i) fix the self-adjusting stop buffer (100) in the open position on the first structure; - (ii) rotate the second structure to adjust the central body (40) in the first direction (X) with respect to the base (20); - (iii) reopen the second structure; - (iv) put the buffer device in the locked position by actuating the locking element (80).

17. Assembly method according to claim 16, characterized in that The first structure is a moving part of a vehicle's body and in that The second structure is a vehicle chassis.